SERS-based pesticide detection by using nanofinger sensors

被引：77

作者：

Kim, Ansoon ^{[1
]}

Barcelo, Steven J. ^{[2
]}

Li, Zhiyong ^{[2
]}

机构：

[1] Korea Res Inst Stand & Sci, Ctr New Funct Mat Metrol, Taejon 305340, South Korea

[2] Hewlett Packard Labs, Syst Res Lab, Palo Alto, CA 94304 USA

来源：

NANOTECHNOLOGY | 2015年 / 26卷 / 01期

关键词：

SERS; pesticide sensing; portable detector; ENHANCED RAMAN-SPECTROSCOPY; MELAMINE; SCATTERING; ASSEMBLIES;

D O I：

10.1088/0957-4484/26/1/015502

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Simple, sensitive, and rapid detection of trace levels of extensively used and highly toxic pesticides are in urgent demand for public health. Surface-enhanced Raman scattering (SERS)based sensor was designed to achieve ultrasensitive and simple pesticide sensing. We developed a portable sensor system composed of high performance and reliable gold nanofinger sensor strips and a custom-built portable Raman spectrometer. Compared to the general procedure and previously reported studies that are limited to laboratory settings, our analytical method is simple, sensitive, rapid, and cost-effective. Based on the SERS results, the chemical interaction of two pesticides, chlorpyrifos (CPF) and thiabendazole (TBZ), with gold nanofingers was studied to determine a fingerprint for each pesticide. The portable SERS-sensor system was successfully demonstrated to detect CPF and TBZ pesticides within 15 min with a detection limit of 35 ppt in drinking water and 7 ppb on apple skin, respectively.

引用

页数：7

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